Furnace-base insulation



C. H. KLINE.

. FURNACE BASE INSULATION.

APPLlCATION FILED MAR. 27. I920.

Patented Sept. 12, 1922..

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FURNACE-BASE INSULATION.

Application filed March 27, 1920. Serial No. 369,182.

To all whom it may concern:

' Be it known that l, CHARLES R. KLINE, a citizen of the United States, residing at Reading, in the county of Berks and State of Pennsylvania, have invented certain new and useful Improvements in Furnace-Base Insulations, of which the following is a specification.

My invention relates to furnace insulation and my object is to provide a simple, convenient and efficient insulation for the base or ash-pit section of the furnace as fully described in connection with the accompanying drawing and particulaii'ly pointed out in the claims.

Fig. 1 is a plan view of a base section of a furnace embodying my invention in a preferred manner, showing a partial section on the line 1-1 of Fig. 2.

Fig. 2 is a corresponding elevation, partly in section, indicating a portion of a superposed furnace section on the line 22 of Fig. 1.

The proper insulation of a furnace to prevent loss of heat by wasteful radiation, is an important feature in saving coal. In my prior Patent No. 1,319,069 of October 21, 1919 I have shown an improved insulation for new furnace construction, and my pend ing application Ser. No. 336,420 filed Nov.

7, 1919 relates to insulation means for fur naces already installed; while the object of any present invention is to provide for protecting the base or ash-pit section of a furnace from this unnecessary loss of heat by radiation.

In the drawings I have indicated an ordinary base section of rectangular form, which section forms the ash-pit of the furnace and supports the superposed sections as usual.

As shown, this base section comprises side walls 1, 1 rear wall 9., and front wall 3, the latter having an aperture i covered by an ash-and-draft door 5. The walls 1, 1, 2 and 3 have the usual upper flanged portion forming a seat 6 for tie superposed furnace sections; and fire grates 8 are suitably supported as usual.

To provide for properly insulating this base section, I provide, as shown, an outer wall 10 spaced from the walls 1, 2 and 1,and

extending parallel therewith. This wall is rormed, prererably, as an upwardly extendingi integral flange of the base section sur-.

rounding the sides and rear thereof, inturned enes 1.1., 11 of the walls 10 connectin the ends of the latter to the inner walls 171 to close the chamber .12 formed between the g pngevwall lQanpd inner walls 1, 2 and .AG all 10 is or less height as shown, than the height of the base section, and the front wall 3 of the base section is uncovered to permit free swing of the ash-and-draft door 5 as usual.

The chamber 12 thus formed between the outer and inner walls of the base section is filled with a non-conducting material consistingfor instance of a dry powdered ma.- terial as ashes, magnesium, or the like.

The usual. plastic insulating material 15 employed to cover the superposed furnace sections is, as shown, supported on the top of the material in chamber 12, to closely unite with the latter and seal the junction of the sections; the material in chamber 12 at the same time giving a support to the plastic insulation 15 to prevent it displacement, as is likely to occur.

il/iiy improved construction thus described, provides not only for thorough insulation of the entire furnace, but gives proper support to the upper plastic insulation and permits a neat and finished appearance to the base.

It will of course be understood that for old furnaces already installed, the outer Wall 10 may be a separate structure spaced from and securedto the base section in any convenient manner.

l vhat I claim is:

1. In a device of the character described,

a furnace base section composed of inner and outer upright walls, said inner wall forming an ash pit chamber and having an upper outwardly deflected flange adapted to form a seat for the furnace sections, said rear walls flange, and insulating material surrounding said section, and merging with said material 10 in said open top packing chamber so as to unite with and seal the junction of the sections, the lower packing material affording a support to the upper insulating material.

In testimony whereof I affix my si nature. 15

CHARLES KfiINE. 

